Cisco Bug: CSCtd69256 - ATM SPA errors after VPI reuse in scaled onfiguration
Jan 07, 2017
- Cisco Carrier Routing System
Known Affected Releases
Symptom: spa related errors Generally accompanied by channel stats error. Conditions: 1. Configure a scaled setup with 4k ATM xconnect sessions under a L2 VP mode. 2. Delete the L2 VPs thus bringing the xconnects down. 3. Configure VC mode L2 transport and bring the xconnect sessions backup. Under such a sequence of actions, there is a possibility that one of the VP teardown does not go through clean leaving behind stale Channel of the VP. If a subsequent VC is created with same VPI value, it might sometimes result in traffic outage on that particular L2-VC. When the problem occurs, the show hw-module subslot <> counter sar will indicate a CID for VCD mapped to the L2 VP which was deleted indicating it is stale.
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